Distribution of gas phase polycyclic aromatic hydrocarbons (PAHs) in selected indoor and outdoor air samples of Malaysia: a case study in Serdang, Selangor and Bachang, Malacca.

Q3 Environmental Science EnvironmentAsia Pub Date : 2017-07-01 DOI:10.14456/EA.2017.23

A. Hafizal, Wan LimWan, Kai PhangRen, M. T. Latif, N. Kannan

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引用次数: 2

Abstract

Distribution of 10 polycyclic aromatic hydrocarbons (PAHs) in the gas phase of air from selected indoor and outdoor areas of Selangor and Malacca, Malaysia has been investigated. A locally designed Semi Permeable Membrane Device (SPMD) was applied for passive air sampling for 37 days at selected locations. Cleanup was carried out with Gas Purge Micro Syringe Extraction (GP-MSE) and the final analysis was using Gas Chromatography-Mass Spectrometry (GC-MS). In this study, 6 indoor and 12 outdoor locations were selected for air sampling. A total of 10 compounds of PAHs (Ʃ10PAHs) were determined in the range of 0.218 ng/m 3 1.692 ng/m and 0.378 ng/m 1.492 ng/m in outdoor and indoor samples respectively. In the outdoor samples, locations such as near a petrol station and heavy traffic showed the maximum levels of Ʃ10PAHs, while rooftop samples showed the lowest Ʃ10PAHs. The distribution of gas phase Ʃ10PAHs was influenced by vehicular emission. Low molecular weight (LMW) compounds (2-3 rings) were dominant in all samples (>70%) indicating that SPMD has successfully sampled the gas phase of the air.

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气相多环芳烃(PAHs)在马来西亚选定的室内和室外空气样本中的分布:在雪兰莪州雪丹和马六甲州巴昌的案例研究。

对马来西亚雪兰莪州和马六甲选定的室内和室外地区空气中10种多环芳烃(PAHs)的气相分布进行了调查。在选定的地点使用当地设计的半透膜装置(SPMD)进行37天的被动空气采样。用气体吹扫微注射器萃取(GP-MSE)进行清理，用气相色谱-质谱(GC-MS)进行最终分析。本研究选取6个室内地点和12个室外地点进行空气采样。室外和室内样品共检出10种PAHs化合物(Ʃ10PAHs)，分别在0.218 ng/m、1.692 ng/m和0.378 ng/m、1.492 ng/m范围内。在室外样本中，靠近加油站和交通繁忙的地方显示出最高水平Ʃ10PAHs，而屋顶样本显示最低水平Ʃ10PAHs。气相Ʃ10PAHs的分布受机动车尾气排放的影响。低分子量(LMW)化合物(2-3环)在所有样品中占主导地位(>70%)，表明SPMD成功地采样了空气的气相。

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